You can force the sale of a shared property most likely. It would be a last resort move, and only do so if you really are done with your sister/her family since doing so will likely end any possible relationship you have currently.
My uncle forced the sale of shared property between his siblings once my last grandparent died. My grandmother's house was put up for auction, and it was easily sold, despite one of the siblings not wanting to do so, but they didn't have the funds to buy anyone out so that's what ended up happening. Proceeds split between owners/heirs after expenses were paid out. If the house is in poor repair, then you're not going to get anything approaching your estimate. Honestly, where are you getting that amount anyway? If you don't live nearby and have no idea the state of the property, what if it is in absolutely terrible shape or located in a really depressed area? Might want to research comps for fixer-uppers in the neighborhood as well to figure out if you're wildly overestimating your value so you can assess true value for your half and proceed from there.
I would suggest you research the possibility in the state the property is located (contact a few property auction groups that work with estates for instance), and then approach your sister with the following deal: she pays you X amount monthly/lump sum/whatever you decide is acceptable - by X date, or you will force the sale of said property and you will split the proceeds. If she defaults on any agreed upon payment schedule, then she has to make it up within 30 days (or whatever), or you'll proceed with the sale of said property.
If you want quit of her, the liability and the hassle, this is the route I'd take. Again, it would likely end any possibility of having a relationship with her, but it sounds like you're not really that interested in one anyway and the money/property and liability issues are the foremost. I personally would not want to be tied to a mooch sibling like this by owning property together in any way, so the fact that you've been doing this for YEARS and liable for taxes/insurance and any other stupid shit she could have happen (liens/injury to guest, damage to neighbor's property) alone would make me quite short about the "pay me for my half ASAP or we're selling this house ASAP" with no delay.