This has become enough of a problem that Google is working on decoupling the "system" version of Chrome (used for login window, settings, etc) from the browser that users interact with directly on Chrome OS, making it so you can keep using the device safely after its EOL date (which is 6 or 8 years now I think).
Here[0] is a little documentation about it, but if you want to use the decoupled browser, it looks like you can enable it via chrome://flags if you are on a recent version (which OP's mom isn't, and since her device isn't going to get patched I doubt she'll benefit from this).
Here[0] is a little documentation about it, but if you want to use the decoupled browser, it looks like you can enable it via chrome://flags if you are on a recent version (which OP's mom isn't, and since her device isn't going to get patched I doubt she'll benefit from this).
0: https://chromium.googlesource.com/chromium/src.git/+/refs/he...