Cell phone use 3GB? What can she do with it?

So I gave my girlfriend my old phone and I'm looking to get her a phone plan of 3GB Unlimited Everything.
But my real question is how much can she do with that amount. her primary uses is below
1. Playing Brave Frontier,Words with Friends,EDM ball hop/beat hop.
2. Facebook,Snapchat,not Instagram, Messenger
3. Texting me since a lot of the point is that
4. Watching tik tok videos, YouTube videos as well
So anyone can shed some light on how much she can do. Phone plan I'm going to use is Unreal Mobile 3GB 

Anonymous2019-12-19T04:46:02Z

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Bear Grylls2019-12-18T23:33:05Z

Probably not enough. I similarly play some games, watch videos, use Twitter or snapchat, etc. and I use 10-40GB per month. I also stream a lot of hockey games on mobile which uses up lots of data, but even without that I think I use more than 3 GB. She will have to ration her internet usage with only 3GB/month, which is no fun.

Master Of Puppets2019-12-18T18:32:38Z

3GB probably won't be enough if she will be streaming a lot of video, especially HD quality. If she uses Wi-Fi most of the time, then it might not be much of an issue. Texting doesn't use mobile data unless she sends/receives MMS (pictures, videos, etc)