My first instinct is to ask more questions. It is hard to know with kids this age exactly what is going on because there are so many options so a few more details might help.
The first is, if there has been a change in her mobility. At ten months, many kids are beginning to "cruise" or even walk unsteadily (though walking at this age would be fairly early when considering averages - cruising is when they start to pull themselves up and hold on to something while they "walk" around). This may seem unrelated, but often developmental milestones coincide with sleep pattern changes as well.
She may be overly tired and especially stimulated from the new physical excertions, or, she may also just be going through a "consolidation" stage where she is sleeping more deeply and fully at night and while she still probably needs a morning nap, it may not need to be as long as it has been in the past (making all her sleep cycles a little - off and difficult for everyone and causing her to be over-tired even though the problem stems from too much sleep). Children's sleep patterns and they type of sleep they are getting when, changes a little around a year. Since she is nearing this milestone, she may be experiencing some of the precursors to this change.
There is also the distinct possibility she is teething and needing extra comfort and can't settle because of the discomfort. I was once told, if we had to teethe as adults we would be driven insane by the intense pressure and pain - and lack of restful sleep it can cause. Some little known indicators a new tooth is about to pop through include mild fevers and a slightly stuffed up nose. The other usual indicators like needing to chomp and chew a lot and being fussy, of course, also apply.
The route of the problem dictates slightly different courses of action, but a good place to start might be in watching for clues to whether she is teething or not, if she is, offer her a little baby Tylenol (under the watch of a physician) at times when she needs to sleep to help her sleep be sounder, better quality sleep. If it is either of the other two your plan of attack might be a bit more complex, but might include the introduction of a transitional sleep aid such as a "lovey" or stuffed animal, or a special blanket, waking her slightly earlier from her morning nap or in the morning after nightime sleep and shifting her sleep so she gets more of it during "night sleep" and less of it during naps.
It is hard to know with kids this age exactly what is going on because there are so many options so a few more details might help.
I didn't read the whole thing, but this article may help in better understanding your child's sleep and sleep patterns and how they are likely to change over the coming months.
