LogMeIn now too expensive, better options for MomSupport?

Several years ago I moved to a different State and needed a way to do remote tech support for my mom. At the time, LogMeIn had a 2 computer option for $99/year. I thought it was a great price for little peace of mind. Either my wife or myself connect into mom's laptop maybe once every six weeks for either maintenance or troubleshoot.

A year later, they wanted $149.00 with no grandfathering. After an email back and forth, I was able to get the $99 again.

Following year, they wanted $249.99. Again, another email back and forth. Again, another $99.

And just this morning, they want $349.99. I'm done.

So I'm looking for new options for the remote support. The biggest requirement is that I can get onto her computer without her being there to give permission. Installing a widget on her machine is not a problem, just needs to be able to let me in even if it's locked or logged on. Cross platform would be great as all my machines are Apples but not a killer since my wife has a Dell.

What do people use? Thanks!