Can I buy Hive for SME on tribaldex and send it to another SoMee wallet than my own?

I believe so. You have to log in through HIVE and then it asks for the account to send to, and verifies if the account actually exists/is valid and spelled right. I was going to do this for a friend who know little on crypto trading myself.

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Of course you can. Use SoMee blog and go to wallet. On wallet you have the Option to transfer or even stake whatever amount of SME to the person's Hive Username. It's as easy as confirming that you are transferring or staking that amount to the person's account. It has never failed for me as every 24 hours I send SME to my wife's wallet for delegating all of her SME to me.