I need help with some sentences.

[Seramar]

...we decided that we were going to make her happy. It was hard to come up with an idea because, what can you do for an old lady? Finally we decided to go to the store and buy her some flowers and some chocolate.

The second sentence is the next one:

...after that happening she always say "hi" to us when we meet her.

Thank you for your correction and suggestions.

[Rover_KE]

Please tell us the source and author of your quoted text and give us the full sentences - not fragments.

[Seramar]

My daughter 8th grade. I am helping her with a school essay. At the same time I am learning too.

[Rover_KE]

Sorry - we don't help with students' assignments.