Suggest a good Tablet under 13k

As my sister cleared CMA foundation, I want to get her a new tablet for the online classes. Was initially interested in redmi pad se (4 GB ram varient) , but upon visiting a store the sales person said that 4 GB of ram would not be sufficient for online classes and advised us the get atleast 6 GB of ram . What do you guys reckon? is 4 GB enough? Would love to hear your thoughts on this .