Long suit trial bid?

Your system should include the short suit trial bids, in which case you should make such bid in ♦ in spite of the ♦ opening.  In my system -which includes both short and long trial bids as well as mere invitations-, the bid would be 2♠ here, and the sequence would be:

1♦ – 1♥ 2♣

2♥ – 2♠ –    2♠: undetermined short suit trial bid

2N – 3♦ –    2!N: no short suit worth mentioning   3♦: ♦ short suit trial bid

3♠ – 4♥.     3♠: game force, ♠ control.

• In case your system does not include short suit trial bids, you are in an emergency situation: time to include it, if necessary at the cost of no long suit trial bids.  Meanwhile, best you can do is to make an invitation with a 3♥ bid, unless this shows a preempt and you will then use whatever trial bid you have, for instance a long suit trial bid in ♠.
• Otherwise, by all means make a short suit trial bid in ♦, the way your system enables you to do it.

Bottom line: You have at least 3 tricks, and 4♥ are awaiting you if partner has no wasted values in ♦ and a quick stopper in ♠, or 3N if partner has ♦ and ♠ tricks.

There were 4♥ or 5♥ for the take.  Your partner’s hand:

♠AKQ9 ♥A987 ♦J73 ♣32.

BBO’s robot passed on 2♥, but she has the excuse of a bad programmer.  On a ♠ lead, 11 tricks were made.