Yes, as she won't be entitled to owner occupier relief, she will be liable to 5% of the price, or €14,000
"A clawback arises if rent is obtained from the letting of the house or apartment for a period of 5 years from the date of the conveyance or transfer, other than under the rent-a-room scheme. The clawback amounts to the difference between the higher stamp duty rates and the duty paid and it becomes payable on the date that rent is first received from the property"